Looks like a problem with the vc redistributable 2008 libraries. I don't think april security bulletin had updates that should affect that, but you never know. Did you try reinstalling the vcredist or removing most recent patches?

We coulndn't re-enact this by hand. This happened sometimes without a reason on several robots. We don`t see a reason because everything looks fine and all works the whole day or 2 days and then it happened again. Really strange!